Commercialisation of an Autonomous Phosphate Analyser Damien Maher1, John Cleary1, John Healy1, Cormac Fay1, Gary Carroll2, Dermot Diamond1 1. CLARITY: Centre for Sensor Web Technologies, Dublin City University 2. EpiSensor Ltd, Moylish Park, Limerick Environ 2010, Limerick Institute of Technology, 17th - 19th February 2010
Overview Motivation Prototype System Commercial System Communications Platform Field Trials Conclusions
Motivation Phosphates Manual collection and sampling Limited spatial & temporal resolution EU Water Framework Directive1 Widespread autonomous sensors Real-time monitoring Low cost per measurement 1. ‘Directive 200/60/EC of the European Parliament and of the Council of 23 October 2000 establishing a framework for Community action in the field of water policy’ , Official Journal L 327/1, Dec. 2000.
Prototype System Portable system2 Fluid handling Microfluidic technology Colorimetric detection GSM communications Yellow method for phosphate detection UV LED and photodiode detector Two-point calibration 2. C. Slater et al., ‘Autonomous field-deployable device for the measurement of phosphate in natural water’, in Proc. SPIE, Vol. 6755, 2007.
Commercial System Prototype System Commercial System Component Cost: € Thousands Component Cost: € Hundreds Internal Volume: 15L Internal Volume: 2.3L System Mass: 12 kg System Mass: 1.7kg Battery: 12V Lead Acid Battery: 3.6V Lithium Battery Life: 2 months Battery Life: 12 months Comms: GSM Modem Comms: ZigBee Radio Delayed Reporting Real time ‘sensor to database’ No Sensor Control Remote Sensor Control 5
System Design Sheet Metal Frame Reagent & Standard Bags Dual Channel Pumps Control Board Detection System 3.6V Battery Sample Inlet(0.45um Filter)
Detection System Injection Moulded Microfluidic Chip UV LED and Photodiode Absorbance Measurement Waste Storage 100ml Reagent, 15ml Standard per 1460 measurements LED and Photodiode Detector Microfluidic Chip
Wireless Platform
System Performance Limit of Detection: 0.1mg/L Minimum sample interval: 20 minutes Linear response range: 0-50 mg/L orthophosphate Point source identification Wireless chemical sensor platform Ongoing Research into other detection methods
Field Deployment Broadmeadow Water Estuary, Swords, Co. Dublin 10
Field Trial Data
Conclusions Phosphate Analyser for Water Compact Long battery life Real time monitoring Remote sensor control Low cost per measurement Wireless chemical sensor platform Legislation driven market
Acknowledgements Thank You This work has been supported by Enterprise Ireland, Innovation Partnership Program (IP/2008/544) Science Foundation Ireland (07/CE/I1147) Thank You